Frederick h



(No Model) F.'H.SAUER.

, SAFETY VALVE.

No. 582,956. Patented May 18, 1897.

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WITNESSES: \NVENTOR Q4. 6 FrederieKHiSZuzar:

ATTORNEYS UNITED STATES PATENT OF ICE.

FREDERICK H. SAUER, OF NEW YORK, N. Y., ASSIG NOR TO SOHAEFER &BUDENBERG, OF MAGDEBURG- BUCKAU, GERMANY.

' SAFETY-VALVE.-

SPECIFICATION forming part of Letters Patent No. 582,956, dated May 18,1897.

Application filed September 19, 1896. Serial No. 606,426. (No model.)

To all whom it may concern:

Beitknown-that I, FREDERICK H. SAUER, a citizen of the United States,residing at New York, in the county and State of New York, have inventednew and useful Improvements in Safety-Valves, of which the following isa specification.

This invention relates to certain improvements in safety-valves, aspointed out in the following specification and claim, and illustrated inthe accompanying drawings, in which Figure 1 represents a verticalsection in the plane indcated by the line a; :20, Fig. 2. Fig. 2 is ahorizontal section in the plane indicated by the line yy, Fig 1.

In the drawings the letter A designates the shell of the valve. B is thevalve, and C is the valve-stem. The valve is depressed uponits seat D bya spring E, or, if desired, a weight may be substituted for the spring.The pressure exerted by the spring E upon the valve can be regulated bya screw F, which engages a screw-socket formed in the top or cover G ofthe shell A. This cover is'provided with a screw-nipple H, adapted toengage a screwthread on the inner surface of a cap I, from which extendtwo arms J J, which form the bearings for a pin 10,0n which swings theblowoff lever K. This lever is adjusted so that it rests upon a shoulderformed between the arms J J, whereby it is retained in a substantiallyhorizontal position, and it is provided with an eye 11, through whichthe valve-stem passes freely. On or near the upper end of the valve-stemis formed a shoulder 13, which is sufficiently large to engage the upperedges of the eye 11, so that if the end 12 of the blowoff lever K isdepressed the upper edge of said eye strikes the shoulder and the valveis raised from its seat, so that the steam can blow oit'. It will bereadily seen from this description that by retaining the blow-01f 1everin a substantially horizontal position the eye 11 is prevented fromcoming in contact with the valve-stem, and this stem can freely move upand down without impediment.

What I claim as new, and desire to secure by Letters Patent, is

The combination with the casing A, of the valve B arranged therein,means for depressing the valve upon its seat, the valve-stem C, theshoulder 13 formed thereon, the cap I adj ustably mounted on the casingand carrying the arms J, a shoulder formed between said arms, theblow-off lever K pivoted between said arms and provided with an eye 11forming an unobstructed passage for the valvestem and adapted to engagethe shoulder 13 when the end 12 of the blow-off lever is depressed, andmeans for retaining the blow-off lever'in a position at right angles tothe valvestem, so as to permit said valve-stem to move up and downfreely without coming in contact with the blow-off lever substantiallyas described.

In testimony whereof I have hereunto set my hand in the presenceof twosubscribing witnesses.

FREDERICK H. SAUER.

\Vitnesses:

WM. 0. HAUFF, E. F. KASTENHUBER.

